How severe is CVE-2023-3242?

CVE-2023-3242 has a CVSS 3.x base score of 8.6, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2023-3242 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-3242?

CVE-2023-3242 affects Br-automation Automation Runtime. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-3242?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-3242 published?

CVE-2023-3242 was published on 2023-07-26 and last updated on 2026-06-17.

CVE-2023-3242

CVE-2023-3242 is a high-severity vulnerability in Br-automation Automation Runtime with a CVSS 3.x base score of 8.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-665.

Key facts

Severity: High (CVSS 3.x base score 8.6)
EPSS exploit prediction: 0% (36th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-665
Affected product: Br-automation Automation Runtime
Published: 2023-07-26
Last modified: 2026-06-17

Description

Improper initialization implementation in Portmapper used in B&R Industrial Automation Automation Runtime <G4.93 allows unauthenticated network-based attackers to cause permanent denial-of-service conditions.

Frequently asked questions

What is CVE-2023-3242?: Improper initialization implementation in Portmapper used in B&R Industrial Automation Automation Runtime <G4.93 allows unauthenticated network-based attackers to cause permanent denial-of-service conditions.
How severe is CVE-2023-3242?: CVE-2023-3242 has a CVSS 3.x base score of 8.6, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2023-3242 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-3242?: CVE-2023-3242 affects Br-automation Automation Runtime. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-3242?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-3242 published?: CVE-2023-3242 was published on 2023-07-26 and last updated on 2026-06-17.

References

https://www.br-automation.com/downloads_br_productcatalogue/assets/1689787619746-en-original-1.0.pdf

Affected products (1)

cpe:2.3:a:br-automation:automation_runtime:*:*:*:*:*:*:*:*

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